deuther



(No Model.) 2 SheetsSheet 1. L. A. DEUTHER.

SAWING MACHINE. No. 510,962. Patented Dec. 19, 1893.

2 Sheets-Sheet 2.

(No Model.)

L. A. DEUTHER. SAWING MACHINE Patentd Dec. 19, 1893.

lnven or:

I UNITED STATES PATENT OFFICE.

LORENZ A. DEUTHER, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF T CHARLES G. DEUTHER, OF SAME PLACE.

SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent NO. 510362. dated December 19, 1893. Application filed dune 30,1893. Serial No. 479,205. (No model.)

To (all whom it may concern.-

Be it known that I, LORENZ A. DEUTHER, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improve ments in Sawing-Machines, of which the following is a specification.

This invention relates to sawing machines which are provided'with a gang of reciproeating saws, and more particularly to a machine of this-kind which is especially desirable for sewing the thin strips of wood from which non-warping picture backs; are constructed.

My invention has for its principal objects to improve the devices whereby the sawsare secured in the saw gate and to so construct the spacing devices of the saws that the latter' maybe readily placed at varying distances apart, for sawing strips of different thicknesses.

A further object of the invention is to provide effective means for preventing deflection or buckling of the saws at the point at which the lumber is fed against the same.

In the accompanying drawings consisting of two sheets:-Fignre 1 is a longitudinal sectional elevation of my improved sawing machine. Fig. 2 is a fragmentary vertical section in line 2-2, Fig. 1. Fig, 3 is a horizontal section in line 3-3, Fig. 1. Fig. i is a detached top plan view of the saw gate with the saws and the wedge-supporting frame removed. Fig. 5 is a perspective View of one of the upper space plates or blocks. Fig. 6 is a similar view of one of the lower space plates.

Like letters of reference refer to like parts in the several figures.

A represents the stationary frame of the machine, 13 the table upon which the lumber to be sawed is placed and G C the usual fee rollers.

D is the vertically reciprocating gate or frame arranged in rear of the feed rollers O G and carrying the gang of saws cl. The

from a rotary crank disk F by a connecting rod f, or in any other suitable manner. The saws and the gate pass through an opening?) in the table.

g is a transverse rod or key passing through openings formed near the lower ends of the gang of saws and bearing with its end portions against the under side of horizontal arms 9' projecting forwardly from the lower cross bar of the gate.

It represents wedges passing through loops or hangers h secured to the upper ends of the saws and bearing upon a horizontal rectangular frame I through which the upper portions of the saws pass, and which rest upon horizontal arms c' projecting forwardly from the upper cross bar of the gate. This rectangular frame is preferably made detachable from the gate to facilitate the insertion and removal of the saws and is provided on its under side with upright pins or dowels i. which fit loosely into sockets in the arms 2', as-showu in Fig. 2, so as to hold the frame in place.

j represents an upper series of space plates or blocks arranged between the saws, near their upper ends, for holding the same at the proper distance apart, and It represents a lower series of such plates arranged between the saws near their lower ends. The space plates of the upper series are movably supported upon a projecting horizontal rib or rail J, secured tothe frontside of the upper cross bar of the saw-gate, as shown in Fig. 1. This supporting rib is undercut or constructed of dovetail cross section and the space plates are formed at their rear portions with correspondingly undercut tenons or books j which embrace the upper and lower edges of the supporting rib, so as to retain the space plates upon the rib, while allowing the same to be shifted laterally thereon. The supporting rib is provided in its upper and lower edges near one end thereof, with notches or recesses 7' which permit the space plates tobe strung supported upon an undercut horizontal rib or rail K secured to the front side of the lower cross bar of the saw gate, and are formed with undercut hooks or tenons 7a which embrace said rib, the latter being provided with recesses 10 similar to the upper supporting rib, to permit the space plates to be placed upon the same.

k are notchesformed in the lower ends of the lower space plates for receiving the rod 9.

Z represents horizontal clamping bolts whereby the upper space plates are tightly clamped against the saws and Z represents similar bolts whereby the lower"space plates are clamped against the saws. These clamping bolts are'arranged in screw threaded openings formed in the horizontal arms g, and 1' of the saw gate and bear with their inner ends against washers or pressure plates m, which bear in turn against the outermost saws of the gang. These pressure blocks are preferably supported upon the ribs J, K, by hooks or tenons, in the same manner as the space plates.

N represents a horizontal guide plate arranged in the opening in the tableB and having parallel longitudinal slits n through which the series of saws pass and whereby the same are held against twisting or deflection at the point where the lumber is presented thereto. This guide plate is flush with the table and is provided at its rear end with a tenon n which is confined in a transverse groove formed in the rear edge of the opening in the table, while its front portion rests upon a ledge n formed by 'rabbetin g the front edge of said opening, and is secured to the ledge by a screw a The guide slits of this plate extend to the rear end of the plate to permit the saws to enter the slits,in placing the plate into the opening of the table. After the saws have been inserted in the gate, they are stretched by driving the wedges into the loops at their upper ends, in the usual manner, and the saws are then firmly clamped adjacent to their end fastenings by tightening the boltsl and Z, thereby effectually holding the saws against deflection and preventing buckling or twisting thereof. By supporting the space plates upon the gate, they are prevented from falling out of place when the saws are loosened for adjusting them or removed for sharpening them, and by making such plates laterally movable on their supporting ribs, two or more of the same may be brought together for increasing the spaces between the saws when it is desired to saw wider strips.

My improvements are especially advantageous in machines designed for sawing lu mber into narrow strips, such as are used for instance in the manufacture of picture backs,

as they permit the use of very thin saws, without liability of buckling or breakage, thus forming anarrow kerf and reducing the waste to a minimum.

I claim as my invention-- 1. In a sawing'machine, the combination with the reciprocating gate and the saws secured therein by suitable end fastenings, of supports independent of such fastenings, arranged on the upper and lower portions of the gate and space blocks or plates arranged between the saws and interlocking with said independent supports, whereby the space blocks are supported on the gate in the absence of the saws, substantially as set forth.

2. In a sawing machine, the combination with the reciprocating gate and thesaws secured therein by suitable end fastenings, of supports independent of such end fastenings, arranged on the upper and lower portions of the gate and space blocks or plates interlocking with said independent. supports and capable of lateral movement thereon for varying the distance between the saws, substantially as set forth.

3. In a sawing machine, the combination with the reciprocating gate having asupporting rib, of the gang of saws secured in the gate, and space plates or blocks having hooks or tenons which embrace said rib, substantially as set forth.

4. In a sawing machine, the combination with the reciprocating gate having an undercut supporting rib, of the gang of saws secured in the gate and space plates or blocks having undercut tenons or hooks embracing said undercut rib, substantially as set forth.

5. 1m a sawing machine, the combination with the reciprocating gate having an undercut supporting rib, provided in its edges'with notches or recesses, of the saws secured in the gate and space plates or blocks having undercut hooks or tenons embracing said rib and adapted to be passed through the notches or recesses of the latter substantially as set forth.

6. In a sawing machine, the'combination with the reciprocating gate having a supporting rib, of the gang of saws secured in the gate, laterally movable space plates or blocks supported on said rib, and clamping bolts whereby the saws are clamped between the space plates, substantially 'as set forth.

7. In a sawing machine the combination with the reciprocating gate having upper-and lower supporting ribs, of the gang of saws each provided near its lower end with an opening and at its upper end with a loop for receiving a tightening wedge, space plates supported upon the upper rib of the gate, space plates supported on the lower side of the gate and provided in their lower ends with notches, and a rod or key passing through the openings of the saws and seated in the notches of the lower space plates, substantiallyas set forth.

8. Ina sawing machine, the combination with the reciprocating saw gate and the gang of saws secured therein, of the table having IIO an opening provided in its rear edge with a Witness my hand this 26th day of June, gruove and at; its front edge with aledge, and 1893. 1

a slitted guide plate arranged in said open- T ing and provided at its rear end with'a, tenon LOREBZ DEUTHER' 5 engaging in said groove and resting with its Witnesses:

front end on said ledge, substantially as set CARL F. GEYER,

forth. J No. J. BONNER. 

